IT201600088964A1 - SLIDING DEVICE. - Google Patents

Description

"SLIDING DEVICE"

TECHNICAL FIELD OF THE INVENTION

The present invention is located in the field of fixtures.

Even more particularly, the present invention relates to a device to facilitate the use of sliding doors and / or similar elements such as retractable separation panels, sliding windows, etc.

Even more precisely, the invention relates to a sliding device that facilitates the operation of sliding doors and / or similar elements in the last phase of their opening and / or closing movement.

STATE OF THE TECHNIQUE

In the state of the art, sliding doors or similar elements such as retractable separation panels, or sliding windows, which slide along a predetermined direction, are known. A common use of these elements is in combination with a hollow wall so as to allow the disappearance of the door inside the wall cavity.

Figure 1 schematically illustrates a side view of a sliding door 100. As can be seen, the sliding door 100 comprises a door 101, or more generally a panel, connected by one or more carriages 11 to a sliding seat 120. In particular , the carriage 11 generally comprises at least one wheel 11 which can rotate along the sliding seat 120.

One problem with such a sliding door is that it is difficult to position the door in the fully open or fully closed position. In particular, assuming that the position in figure one is the totally open position, when the door 100 is moved in the direction indicated by the arrow towards the totally closed position, the user must accompany the door 100 to the end of the movement in order to ensure that the door reaches such a position. In the absence of such an accompanying movement, the door 100 either stops before the completely closed position or reaches it and, after bouncing, stops in a position distant from that of complete closure.

In order to solve this problem, various systems are known in the state of the art which generally hook the door and / or one or more of the carriages in the final phase of its movement. These systems, for example with spring, are loaded when the door moves away from the end position, so that when the door approaches again they can hook it and use the energy loaded inside them to bring the door to the end. extreme open or closed position.

A drawback with known devices consists in the fact that the coupling and release mechanism of such devices is relatively noisy. Furthermore, these devices increase the cost of the door since they must be produced, installed, and calibrated in addition to the sliding seat 120, the door 10 1 and the carriages 11 10.

It is therefore an object of the present invention to provide a device which allows to ensure the movement of the door up to its extreme position, be it closed, open, or any other predetermined position, in a silent manner. Further purposes of the present invention are to limit the number of components necessary for the realization of this device, to ensure its behavior as reliable as possible over time, and to limit the cost of installing and calibrating the device.

SUMMARY OF THE PRESENT INVENTION

The present invention is based on the general consideration according to which potential energy, for example of the gravitational and / or elastic type, can be used to ensure the last part of the movement of the door by acting, or by storing, this potential energy on the trolley. sliding door. In this way it is possible to reduce the number of components as it is not necessary an additional device to the trolley. The installation and calibration of the sliding door is also made easier as only the trolley must be installed and not the trolley and another device. Finally, being able to use the trolley in this way, it is not necessary to install a device inside the cavity in the wall which, in some cases, can be problematic.

An embodiment of the present invention can refer to a sliding device for a sliding door, comprising: a carriage, a sliding seat on at least part of which the carriage can slide, where the sliding seat can comprise a transformation region configured so as to convert a potential energy into a force applied to the carriage, so as to cause it to slide.

Thanks to this implementation, it is possible to cause the carriage to move in the terminal part of the sliding seat without resorting to external elements that cause noise when hooking the carriage, increase production and installation costs and reduce reliability.

In some embodiments, the potential energy can be gravitational and / or elastic and / or magnetic.

Thanks to this form of implementation, it is advantageously possible to use, and possibly combine, different types of potential energy and therefore different ways to store the energy that will cause the carriage and therefore the door to move.

In some embodiments, the transformation region may have a non-zero slope with respect to the horizontal axis so as to convert a gravitational potential energy into a force applied to the carriage, and the carriage may comprise a first wheel configured to rotate along the region of transformation.

Thanks to this form of implementation, it is advantageously possible to convert the gravitational potential energy of the door, or its weight force, into a lateral thrust force of the carriage with respect to the sliding seat.

In some embodiments the carriage may comprise a frame, the carriage may comprise a second wheel, configured to rotate along the sliding seat, and the first wheel and the second wheel may both be connected to the frame in a fixed relative position between of them. Thanks to this form of implementation, it is advantageously possible to create a lever that allows you to precisely control the relationship between the weight force of the door and the lateral thrust force acting on the carriage. The device is therefore adaptable, without modifying the shape of the sliding seat and of the transformation region, to doors having different weights. Furthermore, this embodiment advantageously allows to reduce the movement of the door in the vertical direction.

In some embodiments, the transformation region may have a section having a different size than the rest of the sliding seat so as to convert an elastic potential energy into a force applied to the carriage, the carriage may comprise a third wheel, and the carriage can comprise an elastic element and / or a rotation element configured so as to press the third wheel against the sliding seat.

Thanks to this form of implementation it is advantageously possible to convert an elastic force into a lateral thrust force of the trolley. In particular, for an elastic force for which two elements are approached with respect to each other, it will be possible to use a sliding seat in which its section decreases in the transformation region. On the contrary, if the elastic force is such as to move the two elements away from each other, it is possible to opt for a sliding seat with several parts, configured so that the distance between the two parts increases in the region of transformation.

In some embodiments, the carriage may include a fourth wheel, the elastic element and / or the rotation element can be configured so as to press the fourth wheel against the sliding seat.

Thanks to this form of implementation it is advantageously possible to have the third and fourth wheels acting so as to transform the elastic potential energy into a force of lateral movement of the trolley, while the first and second wheels can simply support the weight of the door and / or converting its gravitational potential energy into a lateral displacement force of the trolley. It is therefore possible to have a great deal of flexibility in the configuration of the device and in the choice of which potential energy to use to move the trolley.

In some embodiments, the third wheel and the fourth wheel may have their respective axis in the vertical direction.

Thanks to this form of implementation it is advantageously possible to obtain a compact structure. Furthermore, if the first and / or second wheel are not present, it is also possible to make the third and / or fourth wheel support the weight of the door.

In some embodiments, the rotating element may comprise a fixed part and a rolling part, the fixed part may comprise a preferably helical inclined surface, the rolling part may comprise a bushing, and the rotating element may be configured in such a way that a force exerted along the axis of rotation on the fixed part causes a rotation of the rotating part due to the relative movement of the bushing with respect to the inclined surface.

Thanks to this form of implementation it is advantageously possible to convert a gravitational potential energy acting on the fixed part into a rotation of the rolling part. Alternatively, or in addition, it is possible to convert an elastic potential energy acting between the fixed part and the rolling part in a similar rotation.

BRIEF DESCRIPTION OF THE FIGURES

Further features and advantages of the invention will be better highlighted by examining the following description of preferred but not exclusive embodiments, illustrated by way of non-limiting indication, with the support of the attached drawings.

In the drawings, the same reference numbers identify the same components.

In the figures:

Figure 1 schematically represents a side view of a sliding door 100 according to the state of the art;

Figure 2A schematically represents a side view of a sliding door and of a relative sliding device 200 according to an embodiment of the present invention;

Figure 2B schematically represents an enlarged view of a part of Figure 2A;

Figure 2C schematically represents a sliding device 200C according to an alternative embodiment of the present invention;

figure 2D schematically represents a sliding device 200D according to an alternative embodiment of the present invention;

Figure 2E schematically represents a sliding device 200E according to an alternative embodiment of the present invention;

Figures 3A and 3B schematically represent a side view of a sliding device 300, according to an alternative embodiment of the present invention, in two different positions;

Figures 4A and 4B schematically represent a side view of a sliding device 400, according to an alternative embodiment of the present invention, in two different positions;

Figures 5A and 5B schematically represent a side view of a sliding device 500, according to an alternative embodiment of the present invention, in two different positions;

Figures 6A and 6B schematically represent a side view of a sliding device 600, according to an alternative embodiment of the present invention, in two different positions;

figure 7A schematically represents a side view of a sliding device 700A, according to an alternative embodiment of the present invention;

figure 7B schematically represents a side view of a sliding device 700B, according to an alternative embodiment of the present invention;

figure 8A schematically represents a side view of a sliding device 800A, according to an alternative embodiment of the present invention;

figure 8B schematically represents a side view of a sliding device 800B, according to an alternative embodiment of the present invention;

Figure 9A schematically represents a top view of a sliding device 900, according to an alternative embodiment of the present invention;

figure 9B schematically represents a side view of the sliding device 900 figure 9A;

figure 9C schematically represents a sectional view of the sliding device 900 figure 9A;

Figure 10 schematically represents a sectional view of a sliding device 1000, according to an alternative embodiment of the present invention;

Figure 1 1A schematically represents an exploded view of a carriage 11 10 for a sliding device 100, according to alternative embodiments of the present invention;

Figure 1 1 B schematically represents vi from the side, from above and from the profile of the trolley 11 10 and / or of the sliding device 1 100 of figure 1 1A;

Figure 11C schematically represents the same views as Figure 11B in an operating position of the trolley 1110 and / or of the device.

DETAILED DESCRIPTION OF THE FIGURES

A detailed description of the embodiments of the present invention represented in the drawing tables will be given below. However, it should be noted that the possible applications of the present invention are not limited to that illustrated nor is the present invention limited to the embodiments represented in the drawing tables. The sliding device 200 illustrated in Figure 2A, according to a first embodiment of the present invention, differs from the sliding device of the sliding door 100 since the sliding seat 220 according to the embodiment of the invention provides a transformation region 230. The purpose of the transformation region 230 consists in transforming a potential energy into a force applied to the carriage 210 so as to cause it to slide along the sliding seat 220. With reference to Figure 2B, illustrating an enlarged view of the extreme right part of the device sliding 200, it is possible to see how the transformation region 230, in this first embodiment, is obtainable through a slope other than zero with respect to the horizontal axis X.

More specifically, the sliding device 200 comprises the sliding seat 220 and one or more carriages 210. At least one of the carriages 210 comprises a wheel 21 1 so as to allow the carriage 210 to slide on the sliding seat 220. The wheel 21 1 it is connected to the frame 214 of the carriage 210 by means of an axis and, possibly, some bearings not shown. The frame 214 can be present on the two sides of the sliding seat 220 or only on one of the same. The wheel 21 1 and / or the sliding seat 220 may have grooves and / or respective protrusions so as to ensure that the wheel 21 1 cannot come out of the sliding seat 220.

The frame 214 of the carriage 210 further comprises a support 216, here only schematically illustrated, to which the door 101 can be attached. Due to the effect of the weight of the door acting on the support 216, then on the frame 214 and finally on the wheel 21 1, when the carriage 210 reaches the transformation region 230, which has a slope other than zero with respect to the horizontal axis X, it will tend to move down and then to the right. In other words, the slope implemented by the transformation region 230 converts the gravitational potential energy of the gate 101 into a force applied to the carriage in the positive X direction so as to cause it to slide to the right.

In this way, it is possible to ensure that the door 101 is positioned in the extreme right position. Optionally, a stop, a shock absorber, any other element able to prevent the carriage 210 from coming out of the seat 220 can be provided so as to precisely define the final point of movement of the carriage 210.

Thanks to this embodiment, it is therefore possible to ensure that the door 101 goes to position itself as far to the right as possible, facilitating its last sliding phase thanks to the presence of the transformation region 230. Furthermore, since there are no elements that hook the door , the operation of the door is particularly quiet. In addition, being able to realize the transformation region 230 with a simple slope with respect to the horizontal axis, it is possible to create a particularly compact sliding device with very limited costs. Finally, given the limited number of moving parts and more generally limited number of components of the sliding device, it will have a particularly reliable operation over time.

Although the transformation region 230 has been illustrated in the embodiment illustrated in Figure 2B as a substantially linear region and having a constant slope with respect to the horizontal axis X, the present invention is not limited to this embodiment. In particular, any shape of the sliding seat 220 in the transformation region 230 that allows to transform a gravitational potential energy into a force acting on the carriage 210 can be implemented. By way of example, the sliding devices 200C, 200D, and 200E have respectively sliding seats 220C, 220D, and 220E having respective transformation regions 230C, 230D, and 230E with a concave curvilinear shape, a convex curvilinear shape and a multiline. However, it will be clear that any shape that can exploit the downward movement of the carriage 210 by converting into a movement towards the positive X direction can be implemented.

The slider 200 generally converts a downward movement of the door 101 into a positive X-direction movement of the carriage 210. In some cases, the downward movement of the door 101 may be undesirable. The sliding device 300 illustrated in Figures 3A and 3B according to a further embodiment advantageously reduces this downward movement.

In particular, the trolley 310 comprises a frame 314 having a first wheel 21 1 and a second wheel 312. The frame 314 is substantially rigid so that the first wheel 21 1 and the second wheel 312 are positioned in a fixed relative position to each other even though both being able to rotate with respect to their axis.

By appropriately sizing the frame 314 with respect to the dimensions of the transformation region 230, it is possible to cause the wheel 21 1 to descend along the transformation region 230 while the wheel 312 remains substantially outside the transformation region 230. In this way, the downward movement of the support 216 is reduced compared to the previous embodiment. Furthermore, the sliding device 300 allows more flexibility in the choice of the force exerted on the carriage 310. In particular, by appropriately selecting the position of the support 216 with respect to the axes of the wheels 21 1 and 312, it is possible to modify the lever ratio exerted by the weight of the door on the axis of the wheel 21 1 and therefore modify the force with which the carriage 310 will be pushed in the positive X direction.

In some cases the downward movement of the door is not acceptable, even to the small extent exerted by the sliding device 300. A solution in these cases is offered by the sliding device 400 according to a further embodiment of the present invention. As can be seen from Figures 4A and 4B, the sliding device 400 differs from the sliding device 200 due to the presence of an elastic element 415. In the case illustrated in the figure, the elastic element 415 is made by means of a leaf spring integrally connected to the frame 214 of the carriage 410. However, it will be clear to those skilled in the art that different types of springs and / or, more generally, different types of elastic elements 415 can be used in a similar manner to achieve the same purpose.

In particular, the elastic element 415 is configured so as to have a rest position in which the wheel 413, connected at its end, is positioned lower than the wheel 21 1, when the frame 214 is substantially vertical as well as in shape of illustrated realization. In other words, the elastic element 415 pushes the wheel 413 downwards. This thrust is ensured by the weight of the door acting on the frame 214 so as to keep the frame 214 in the substantially vertical position illustrated in Figures 4A and 4B.

When the wheel 413 is found in the transformation region 230, the downward thrust given by the elastic element 415 causes the carriage 410 to be subjected to a force in the positive X direction. In this case, therefore, the potential energy that is transformed into a movement force of the trolley 410 is not a gravitational potential energy but is an elastic potential energy contained within the elastic element 415.

The advantage of this form of implementation therefore consists in the fact that the door does not move in a vertical direction, contrary to the sliding devices 200 and 300.

The sliding device 500, illustrated in Figures 5A and 5B represents an alternative form of implementation of the sliding device 400, in which the frame 3 14 is used in place of the frame 214. In this way, it is advantageously possible to prevent the frame 314 oscillates, with respect to the position illustrated, under the elastic action of the elastic element 415. In particular, the presence of the two wheels 21 1 and 312, compared to the case of the single wheel 21 1 of the sliding device 400, improves the stability of the frame 314 with respect to the sliding seat 220. By reducing the possibility of such oscillations, it is also possible to reduce the possibility that the frame 314 is thrown out of the sliding seat 220.

It will be clear that, despite in the embodiments illustrated for the sliding device 400 and 500, the only force acting on the respective carriages 410 and 510 is that given by the conversion of the elastic potential energy contained in the elastic element 415, the present invention is not limited to this case. In hybrid embodiments, it will therefore be possible to convert both the elastic potential energy contained in the elastic element 415 and the gravitational potential energy exerted by the gate 101 into a rightward movement of the carriages 410 and 510. In particular, this will be possible by dimensioning the carriages and the sliding seats 220 in such a way as to allow one or both wheels 21 1, 312 to interact with the transformation region 230. The sliding device 600 illustrated in figures 6A and 6B has a substantially similar operation to that of the sliding device 400 but it differs in that the elastic element 415, instead of pressing the wheel 413 downwards on the sliding seat 220, presses the wheel 413 upwards. In this case, the sliding seat 620 therefore comprises two parts 621, 622. On the part 621 of the sliding seat 620, the wheel 21 1 moves, while on the part 622 of the sliding seat 620, the wheel 413 moves under the action of the elastic element 415. The presence of the transformation region 230 in the part 622 of the sliding seat 620 guarantees an operation of the sliding device 600 similar to that of the sliding device 400.

Furthermore, the sliding device 600, compared to the sliding device 400, is particularly advantageous in that the combination of the wheel 21 1 pushed downwards by the weight of the door and of the wheel 413 pushed upwards by the elastic element 415 gives a advantageous stability to the carriage 214 thus preventing it from bouncing along the vertical axis. This translates into a better reliability of the sliding device 600 which avoids the possibility of the carriage 410 coming out of its own sliding seat. In addition, the absence of jolts makes the operation of the slider 600 more silent. In addition, by dividing the sliding seat 620 into two parts 621, 622, it is possible to implement two transformation regions 230. In particular, while in the illustrated embodiment only the part 622 comprises a transformation region 230 suitable for converting energy elastic potential contained within the elastic element 415, it will also be possible to realize a transformation region 230 in the part 621 suitable for converting the gravitational potential energy of the gate, as previously explained with reference to the slider 200. In other words, it will be It is possible to realize a transformation region 230 only on the part 621, only on the part 622, or on both, as for example illustrated in Figure 8B.

Although the slider 600 has been illustrated as based on the frame 214, it will be clear that a similar embodiment can be based on the frame 314.

The sliding device 700A illustrated in Figure 7 according to an alternative embodiment of the present invention allows the conversion of the elastic potential energy contained within an elastic element 715 into a movement to the right of the carriage 710.

In particular, the elastic element 715 schematically represented in the figure by a spring connected to the two axes of the wheels 21 1 and 413, is configured so as to press the wheels 21 1 and 413 respectively towards the sliding seat 220. In the embodiment illustrated , this allows to convert the elastic potential energy contained inside the elastic element 715 into a force acting on the carriage 710 towards the positive X direction in addition to the force deriving from the conversion of the gravitational potential energy of the door, since the region transformer 230 is located on the side of the sliding seat 220 on which the wheel 21 1 slides.

However, the present invention is not limited to this embodiment and the embodiment in which the slide seat 220 is positioned upside down will also be implementable. In this embodiment, it will therefore be possible to convert only the elastic potential energy contained within the elastic element 715 into a force acting on the carriage 710 advantageously maintaining the vertical position of the door in an unaltered manner.

In both these embodiments, the presence of the elastic element 715, in addition to providing the elastic potential energy that causes, or contributing to, the movement of the carriage 710, ensures that the wheel 21 1 cannot come out of its seat. sliding 220, thus increasing the reliability of the 700A slider and reducing its noise. Also in this case, although the embodiment has been illustrated with a single wheel 21 1, it will be clear that a similar embodiment in which the second wheel 312 is also present is implementable.

The sliding device 700B illustrated in figure 7B differs from the device 700A due to the presence of two transformation regions 230, on two opposite sides of the sliding seat 220. This implementation advantageously allows to increase the force exerted on the carriage 710, since the the elastic element 715 will be able to work with a greater excursion. In general, one or more transformation regions 230 can be present on one or more sides of the sliding seat 220, in all embodiments of the present invention.

The sliding device 800A illustrated in figure 8A differs from the sliding device 700A in that the elastic element 815 does not tend to bring the axes of the wheels 21 1, 413 closer together but, on the contrary, tends to move them away from each other.

The operation is however similar and it will be clear to those skilled in the art that the elastic ratio exerted by the elastic element 815 on the wheel 413 is converted into a rightward movement of the carriage 810 by the transformation region 230. As previously described, also this embodiment can be made with two wheels 21 1 and 312. In addition, or alternatively, also in this embodiment, one or both parts 621, 622 of the sliding seat 620 can comprise a transformation region 230, as previously described in with reference to the sliding device 600. In particular, as illustrated in Figure 8B, the device 800B comprises a transformation region 230 both in the part 621 and in the part 622 of the sliding seat 620.

In all the embodiments described above, the axles of the wheels 21 1, 312, 413 are positioned in a substantially horizontal direction. However, the present invention is not limited to this configuration and all the embodiments can also be implemented with the axles of all or some of the wheels 21 1, 312, 413 in a substantially vertical direction.

In particular, by way of example, a sliding device 900 will be described in relation to Figures 9A, 9B and 9C, in which the weight of the door is supported by a wheel 21 1 having a substantially horizontal axis while the force acting on the carriage 910 is obtained from the conversion of an elastic potential energy carried out by a transformation region 230 in combination with an elastic element 715 acting on two wheels 413, 913 having a substantially vertical axis.

More specifically, as visible in Figure 9A, a first part 922 of the sliding seat 920 has a transformation region 230 which interacts with the wheel 913 so as to transform the elastic potential energy contained in the elastic element 715 in a similar manner to what has already been described in relation to the sliding device 700A. However, as illustrated in the figures, it is possible to position the wheels 413 and 913 in a substantially horizontal direction.

Although the sectional view of Figure 9C represents the grooves inside the part 922 of the sliding seat 920, it will be clear that the invention is not limited to this specific embodiment. In particular, the grooves advantageously make it possible to ensure that the wheels 413, 913 do not come out of the sliding seat 922. However, a similar effect can also be obtained in the absence of the grooves, for example by ensuring a sufficient elastic force exerted by the elastic element 715. In alternative embodiments, the presence of the grooves in the part 922 of the sliding seat 1020 also allows the elimination of the wheel 21 1 and the part 921 of the sliding seat 920. In other words, the weight of the door is supported by the interaction of the wheels 413, 913, and of the grooves inside the part 922 of the sliding seat 920.

The sliding device 1000 illustrated in Figure 10 represents a variation of the sliding device 900 in which instead of having an elastic element 715 which acts to bring the wheels 413, 913 together, the elastic element 815 acts in such a way as to move the wheels away. 413, 913 between them, towards the respective parts 1022 and 1023 of the sliding seat 1020. The same considerations already made for the sliding device 900 also apply to the sliding device 1000, in particular with regard to the presence of the wheel 21 1 and part 1021 of the sliding seat 1020.

Figure 1 1A schematically represents an exploded view of a carriage 11 10 for a sliding device 100, according to alternative embodiments of the present invention. Figure 1 1 B schematically represents side, top and profile views of the carriage 11 10 and / or of the sliding device 1 100 of Figure 1 1A while Figure 1 1 C schematically represents the same views as Figure 1 1 B in an operating position of the trolley 1 1 10 and / or of the device 1 100.

Generally, the slider 1 100 has two wheels 413 and 913 which slide in two respective sliders 1022 and 1023, similarly to the slider 1000. However, while in the slider 1000 the wheels 413, 913 are pushed towards the respective seats 1022, 1023 by the action of the elastic element 815, in the carriage 11 10 and in the corresponding sliding device 100, the pushing action of the wheels 413 and 913 is exerted by a combination of an action of an elastic element 11 15 and by the action of the weight of the door. In an alternative embodiment, the elastic element 1 1 15 can also be eliminated, in such a way as to make the device work only on the basis of the potential gravitational energy exerted by the door.

More specifically, as shown in Figure 11A, the trolley 1110 comprises a frame 1114 on which the wheels 413 and 913 are installed. In the specific embodiment illustrated, each of the wheels interacts with the frame 1114 through one or more bearings 1 141, a bushing 1 142, and a screw 1 143. It will however be clear that this specific form of implementation is only a possible example of how the two wheels 413,913 can be connected to the frame 1 1 14. More generally, any implementation which allows to connect the wheels 413, 913 to the frame 11 14 so that the wheels 413, 913 have a substantially vertical axis can be implemented.

The frame 1114 further comprises a fixed part 1 131 and a rolling part 1 132. The combination of the fixed part 1 131 and the rolling part 1 132 results in a rotating element 1 130 which, as will be described below, converts the weight of the door, acting on the fixed part 1 131, in a rotation of the rolling part 1 132 with respect to the fixed part 1 131.

More specifically, the rolling part 1 132 comprises a rotation axis 1 133 which is positioned, possibly by means of an optional bushing 1 137, inside a respective hole 1 134 in the fixed part 1 131. It will be clear that the mirror solution, in which the rotation axis 1 133 is part of the fixed part 1 131, can also be implemented. In this way, the fixed part 1 131 and the rolling part 1 132 can rotate each other having the axis 1 133 as the axis of rotation.

The fixed part 1 131 further comprises at least one inclined surface 1 136 having a preferably helical shape. In the embodiment specifically illustrated, two such inclined surfaces 1 136 are present, only one of which is visible in Figure 11A since the other, specular, is located behind the fixed part 1 131. At the same time, the rolling part 1 132 comprises at least one bushing 1 135, or more generally an element that can move along the inclined surface 1 136. It will be clear that the bushing 1135, or a bearing, allows such a movement with a reduced friction. However, such an implementation is not necessary and it will be possible to realize the invention also by replacing the bushing 1 135 with a fixed axis with respect to the rolling part 1 132.

When the fixed part and the rolling part are assembled together, the bushing 1 135 is positioned below the inclined surface 1 136. When the fixed part 1 131 is pushed downwards, the inclination of the surface inclined 1 136 and its interaction with the bushing 1 135 therefore results in a rotation of the rotatable part 1 132 with respect to the fixed part 1136. Such a downward thrust of the fixed part 1 131 is ensured by the weight of the door supported by the connected support 216 to the fixed part 1 131. In the illustrated embodiment, two elastic elements 1 1 15 are also shown in the form of two springs, which participate in ensuring that the fixed part 1 131 tends to move away from the rolling part 1 132. However, as previously indicated, such elastic elements 1115 are optional.

As it will be better understood with reference to Figures 1 1B and 1 1 C, when the fixed part 1 131 is fixed to the door, its movement with respect to the X axis is made impossible. The weight force of the door acting on the fixed part 1 131 therefore tends to rotate the rolling part 1 132 as indicated by the arrow in the top view in Figure 1 1C. this rotation ensures that the wheel 413 is pushed towards the sliding seat 1022 while the wheel 913 is pushed towards the sliding seat 1023.

In this way, by advantageously exploiting the weight of the door, it is possible to ensure that the two wheels are pushed towards their respective sliding seats and keep the carriage in position with respect to the sliding seat 1020.

In a similar way to what has been described for the previous embodiments, when a transformation zone 230, in the form of a zone in which the internal distance between the sliding seats 1022 and 1023 widens, for example in a similar way as illustrated with respect to the sliding seats 621 and 622, it will be possible to convert the gravitational potential energy of the door into a lateral force acting on the carriage 1110 due to the interaction of the rotation force of the rolling part 1132 and the seat scroll 1020.

In other words, when the distance between the sliding seats 1022 and 1023 increases, the carriage 11 10 will have a tendency to move in the direction of increasing the distance between the sliding seats 1022 and 1023, thus transforming the potential gravitational energy of the door in a force of movement of the carriage 11 10, in a manner analogous to the embodiments described above.

The optional presence of the elastic elements 1115 is advantageous since it allows to increase the rotational force imparted to the rolling part 1132.

Furthermore, in some embodiments, the trolley 1110 comprises a stop element 1150 that can be used to stop the trolley, and therefore the door, once its extreme position has been reached. To prevent the door from banging, the stop element 1 150 often operates on a shock absorber (not shown) mounted on the sliding seat, or on the door frame, or more generally on the wall or the bearing structure of the door. When the stop element 1 150 meets the shock absorber, the latter will require a force to be compressed, for example equal to 200-300 grams. The elastic elements 1 1 15 can advantageously be chosen, in consideration of the geometry of the rotation element 1 130, so as to compensate for such a force. It will be clear that the force exerted by the stop element 1 150 in the sliding direction of the door depends not only on the force exerted by the elastic element 11 15 but also on the conversion performed by the rotation element 1 130. This conversion value, or lever, will therefore advantageously be considered in choosing the value of the elastic constant of the elastic element 11 15.

In particular, when the rotational force exerted by the elastic elements 11 15 substantially compensates for the force required to compress the aforesaid shock absorber, it is advantageously possible to obtain a substantially similar movement for doors of different weight. This is due to the fact that the thrust force acting on the door will be substantially proportional to the weight of the door, since the force exerted by the elastic elements 11 15 is compensated by the shock absorber. Since the inertia of the door to movement is also substantially proportional to the weight of the door, the result is that the acceleration of the door in the final phase of its movement, or more generally the speed with which the door will move, will be substantially constant, regardless of the weight of the door. In this way, the presence of the elastic elements 115 makes the operation of the system, in the presence of the shock absorber, independent of the weight of the door, thus creating a self-regulation mechanism.

In the embodiment illustrated in Figures 11A, 11B and 11C, the trolley 1110 further comprises one or more magnetic elements 1160, in the form for example of permanent magnets. The advantage conferred by the magnetic elements 1 160 consists in the fact that they are attracted to the sliding seats 1022 and / or 1023 and / or to a metal element positioned above the sliding seats 1022, 1023.

In this way, it is possible that the magnetic elements 1 160, connected integrally to the frame 1014, have a force of attraction in the positive Y direction so as to support a part of the weight of the door making it easier for the wheels 413, 913 aH to slide. inside the respective offices.

Obviously, although the present invention has been clarified by means of the above detailed description of the embodiments represented in the drawing tables, the present invention is not limited to the embodiments represented in the drawing tables and described in detail above. In particular, it will be clear that different elements of different embodiments can be combined with each other independently.

The object of the present invention is therefore defined by the claims.

Claims (8)

CLAIMS 1. A sliding device (200-1100) for a sliding door (100), comprising: a trolley (210, 3 10, 710, 810, 910, 1010, 1 100), a sliding seat (220, 220C, 220D, 220E, 620, 920, 1020) on at least part of which the carriage (210, 310, 710, 810, 910, 1010, 1 100) can slide; characterized by the fact that the sliding seat (220, 220C, 220D, 220E, 620, 920, 1020) comprises a transformation region (230, 230C, 230D, 230E) configured so as to convert a potential energy into a force applied to the carriage (210, 310, 710, 810, 910, 1010, 1 100), so as to cause it to slip. 2. The device according to claim 1, where the potential energy is gravitational and / or elastic and / or magnetic. 3. The device (200, 300, 400, 500, 700A, 700B) according to any preceding claim, where the transformation region (230, 230C, 230D, 230E) has a slope other than zero with respect to the horizontal axis (X) so as to convert a gravitational potential energy into a force applied to the trolley (210, 310, 410, 510 , 710), and where the carriage (210, 310, 410, 510, 710) comprises a first wheel (21 1) configured so as to rotate along the transformation region. The device (300, 500) according to claim 3, where the carriage (310, 510) includes a frame (314), where the carriage (310, 510) comprises a second wheel (312), configured so as to rotate along the sliding seat (220, 220C, 220D, 220E), and where the first wheel (21 1) and the second wheel (312) are both connected to the frame (314) in a fixed relative position to each other. 5. The device (400, 500, 600, 700A, 700B, 800A, 800B, 900, 1000, 1 100) according to any preceding claim, where the transformation region (230, 230C, 230D, 230E) has a section having a different size than the rest of the sliding seat (220, 220C, 220D, 220E, 620, 920, 1020) so as to convert a potential energy elastic in a force applied to the carriage (410, 510, 710, 810, 910, 1010), where the carriage (410, 510, 710, 810, 910, 1010) includes a third wheel (413), and where the carriage (410, 510, 710, 810, 9101 1010) comprises an elastic element (415, 715, 815, 1 1 15) and / or a rotation element (1030) configured so as to press the third wheel (413) against the sliding seat (220, 220C, 220D, 220E, 620, 920, 1020). 6. The device (900, 1000, 1 100) according to claim 5, where the carriage (910, 1010) includes a fourth wheel (913) where the elastic element and / or the rotation element (1030) is configured so as to press the fourth wheel (913) against the sliding seat (920, 1020). The device (900, 1000, 1 100) according to claim 6, where the third wheel (413) and the fourth wheel (913) have their respective axis in the vertical direction (Y). The device (1 100) according to any one of claims 5 to 7, where the rotation element (1030) includes a fixed part (1 131) and a rolling part (1 132), where the fixed part (1 131) comprises an inclined surface (1 136) preferably helical, where the rolling part (1 132) includes a bushing (1 135), and where the rotation element (1030) is configured in such a way that a force exerted along the rotation axis on the fixed part (1 131) causes a rotation of the rotating part (1 132) due to the relative movement of the bushing ( 1 135) with respect to the inclined surface (1 136).